From 6ee7cea56b63c04b3adbe7e84b4816686e88d14a Mon Sep 17 00:00:00 2001
From: Daniel Odendahl Jr <danielbodendahl@gmail.com>
Date: Mon, 5 Mar 2018 04:10:15 +0000
Subject: [PATCH] hash util function

---
 commands/search/gravatar.js   | 8 ++++----
 commands/text-edit/md5.js     | 4 ++--
 commands/text-edit/sha-256.js | 4 ++--
 util/Util.js                  | 5 +++++
 4 files changed, 13 insertions(+), 8 deletions(-)

diff --git a/commands/search/gravatar.js b/commands/search/gravatar.js
index 97e48edc..f27d8af4 100644
--- a/commands/search/gravatar.js
+++ b/commands/search/gravatar.js
@@ -1,6 +1,6 @@
 const { Command } = require('discord.js-commando');
 const snekfetch = require('snekfetch');
-const crypto = require('crypto');
+const { hash } = require('../../util/Util');
 
 module.exports = class GravatarCommand extends Command {
 	constructor(client) {
@@ -22,16 +22,16 @@ module.exports = class GravatarCommand extends Command {
 	}
 
 	async run(msg, { email }) {
-		const hash = crypto.createHash('md5').update(email).digest('hex');
+		const emailHash = hash(email, 'md5');
 		try {
 			const { body } = await snekfetch
-				.get(`https://www.gravatar.com/avatar/${hash}`)
+				.get(`https://www.gravatar.com/avatar/${emailHash}`)
 				.query({
 					size: 500,
 					default: 404,
 					rating: msg.channel.nsfw ? 'r' : 'pg'
 				});
-			return msg.say({ files: [{ attachment: body, name: `${hash}.jpg` }] });
+			return msg.say({ files: [{ attachment: body, name: `${emailHash}.jpg` }] });
 		} catch (err) {
 			if (err.status === 404) return msg.say('Could not find any results.');
 			return msg.reply(`Oh no, an error occurred: \`${err.message}\`. Try again later!`);
diff --git a/commands/text-edit/md5.js b/commands/text-edit/md5.js
index 2001b77b..7f3b7bad 100644
--- a/commands/text-edit/md5.js
+++ b/commands/text-edit/md5.js
@@ -1,5 +1,5 @@
 const { Command } = require('discord.js-commando');
-const crypto = require('crypto');
+const { hash } = require('../../util/Util');
 
 module.exports = class MD5Command extends Command {
 	constructor(client) {
@@ -20,6 +20,6 @@ module.exports = class MD5Command extends Command {
 	}
 
 	run(msg, { text }) {
-		return msg.say(crypto.createHash('md5').update(text).digest('hex'));
+		return msg.say(hash(text, 'md5'));
 	}
 };
diff --git a/commands/text-edit/sha-256.js b/commands/text-edit/sha-256.js
index f9de9217..5ae52d55 100644
--- a/commands/text-edit/sha-256.js
+++ b/commands/text-edit/sha-256.js
@@ -1,5 +1,5 @@
 const { Command } = require('discord.js-commando');
-const crypto = require('crypto');
+const { hash } = require('../../util/Util');
 
 module.exports = class SHA256Command extends Command {
 	constructor(client) {
@@ -20,6 +20,6 @@ module.exports = class SHA256Command extends Command {
 	}
 
 	run(msg, { text }) {
-		return msg.say(crypto.createHash('sha256').update(text).digest('hex'));
+		return msg.say(hash(text, 'sha256'));
 	}
 };
diff --git a/util/Util.js b/util/Util.js
index d564f969..e0376819 100644
--- a/util/Util.js
+++ b/util/Util.js
@@ -1,3 +1,4 @@
+const crypto = require('crypto');
 const yes = ['yes', 'y', 'ye', 'yeah', 'yup', 'yea'];
 const no = ['no', 'n', 'nah', 'nope'];
 
@@ -55,6 +56,10 @@ class Util {
 		return Buffer.from(text).toString('base64');
 	}
 
+	static hash(text, algorithm) {
+		return crypto.createHash(algorithm).update(text).digest('hex');
+	}
+
 	static cleanXML(text) {
 		return text
 			.replace(/<br \/>/g, '')